% vid = videoinput('winvideo',1);    % ????
vid = videoinput('winvideo',1,'YUY2_640x480');

% set(vid,'ReturnedColorSpace','grayscale');

% set(vid,'ReturnedColorSpace','rgb');

cam_info = imaqhwinfo('winvideo');    
cam_info.DeviceInfo.DeviceID;    
cam_info.DeviceInfo.SupportedFormats;    

preview(vid);